Fountain pen



Feb. 14, -1 928.

R. T. PoLLQcK FOUNTAIN PEN IIIIII Original Filed Nov. 50. 1921 siii. 24 d W Patentedelra.` 111i,` 1928'.

UNIT EngpsqTA ROBERT T. Porrtociz,l Or BOSTON, MASSACHUSETTS, ssrGNOn TO rOLLOcx PEN com- 721.658.940@ TES* PartNo-IT; 0FP'IC-IL PANY, .10F BOS'ITON, MASSACHUSETTS, A `OORPOBAQLION OF DELAWARE.-

fk j FOUNTAINPEN; y

,Application mea 'November so, 1921, serial No. 518,772. nenewea March s1,

v This invention relates to fountain pens, and refers more-partlcularly to a fountain pen in which the ink or .writing fluid is contained in a cartridge positioned in the barrel of the pen.

Among the salient objects of the invention are to provide a fountain pen havin a thin, sealed cartridge` ,of pyralin cellu oid, or metallic substance positioned in the barrel of the pen and fixed to theI feed ofthe pen so that the ink is prevented from leaking into the pen barrel or fromfouling the feed due to a seal arrangement between the cartridge and ink feed; to provide an improved type of cartridge for use in pens of this character and an adjustment for the pen feed and puncturing point which punctures the cartridge after lacement in the barrel so that the feed is a ways properly positioned relative the cartridge and pen barrel, assuring free iiow of ink and proper breaking and puncturing of the cartridge seal.

In the drawings:

Fig. 1 is a sectional side view of the pen.

Fig. 2 is a detail of the cartridge.

Fig. 3 is a detail view of the feed and Figures 4 and ,5 are sectional views showing the connection between the cartridge and the bushing as the cartridge is 4approaching sealing position. y

Referring in detail to the drawings, the ink barrel 1 is threaded at 2 to receive the sealing cap 4 and at 5 to receive the pen protecting cap 6. Within the .barrel of the pen is a bushing 7 screwed near the pen holding portion of the barrelvor in the lower part of the ink well.- This'bushing is bored and carefully reamed to receive the ink feed 8 which has a puncturing point 9 projecting into the ink compartment of the barrel and having a saddle at 10 to receive the pen pointll. The feed 8 is recessed at 12 to receive a screw 13 which is screwed into a threaded hole in the barrel and sets in to the recess 12 of the feed to position accurately the feed thereby assuring the same ink flow whenever set in this position and also positioning accurately the feed and puncturing point relative to the cartridge. The cart-ridge denoted as 3 is insertable into the pen barrel through the end of the barrel closed by the cap 4. This cartridge or container contains a writing fluid and is preferably of a metallic substance bein sealed to retain the liquid ink in an air tight condition. The

f by the ink seeping back into the barrel of lower endof the'cartridge has a hollow end as .shown at`14' into which the puncturing point protrudes and punctures the container or cartridge atthe inner cap 15.l This'cap is Istamped lin such ar manner that it may be easily punctured bythepoint 9. The inner surface of the hollowl end 14 is threaded'to screw upon the threads `16` on the bushing 7.

The end of the 'bushing which A extends into the link compartment has a 45 degree bevelled seat 17 upon which the cartridge seats, the 45 degree bevel 18 on the cartridge tting snugly against the bevel 17 on the bushing, the threads 14 screwing upon the threads 16 of the bushing.

On inserting the ink cartridge or container into the pen barrel, the cartridge is set against the bushing and screwed thereon, the puncturing point 9 pushing out the sealing cap 15 and permitting 'the ink to flow into the feed. The engagement of the bushing 'with the ink cartrldge is effected' by triple threads so that the cartridge is turned into complete engagement so that the bevels of the respective units seat with from a quarter to a full turn of the Jcartridge. This not only insures a liquid tight connection between the ink feed and container but pre-y vents any fouling ofthe ink barrel caused the, pen and forward into the pen holding portion. Around the surface of the barrel are drilled small holes 19 communicating both with the ink compartment and the air. The'purpose of these vent holes is to prevent a vacuum being formed-with the barrel in withdrawing the cartridge. The holes permit air to pass into the barrel as the cartridge is withdrawn, thereby preventing any unused ink or writing fluid to be drawn out into the ink compartment during the withdrawal operation. If this precaution is not taken, as the cartridge is removed from the barrel any unused.or waste ink left in the empty cartridge will be withdrawn from 100 the cartridge and distributed along the ink compartment of the pen, fouling the barrel. The screw 13, as explained, near .the feed, is properly positioned in the penholding portion of the barrel and bushing 7 fits into 105 the recess 12 of the feed portion. The accurate positioning of the .feed relative to the ink cart-ridge and pen point assures a constant and identical ink flow at all timesand lpositions Aaccurately fthe puncturing point 110 relative to the cartridge so that puncturing the seal will be effected properly. n

In screwing the cartridge onto the bushing .7 the hollow end of the cartridge is firstsealed byl engagement of the threads 16 and 17 making a liquid tight seal.

I claim as my invention:

1.' A fountain pen having an interchan eable sealed ink cartridge insertable in t e barrel of the pen, an ink feed in said barrel having a puncturing point for breaking the seal of the ink cartridge whenvthe latter is in position in the pen and means for accurate positioning of the ink feed within said barrel comprising a pin passing through the wall of the barrel and engaging the ink feed.

2. A fountain pen 'having a sealed ink cartridge insertable into the barrel of the pen, a feed unitadapted to break the seal of the cartridge and feed the ink to the pen, and means for accurately ositioning the feed unit in the pen barrel re ative to the ink cartridge comprising an element passing through the wall of said pen barrel and cooperatively engaging the feed unit.

3. A fountain pen having a barrel, provided with an opening, an ink feed insertable in said opening and adapted to support and carry a writing point, an interchangeable cartridge insertable in the barrel, a puncturing point on said ink feed, and means engaging the lower part of the barrel with the ink feed for preventing a displacement thereof relative to the barrel, said meanscomprising a pin passing through an aperture in the wall of the said barrel, and having cooperative engagement with said ink feed.

4. In a fountain pen, the combination with an ink barrel having a central opening passing through the lower portion thereof` with a tapering socket near the upper end of said opening, an ink feed insertable in said opening, a bushing threaded to the walls of the tapering socket surrounding said ink feed, an interchangeable ink cartridge disposed within the upper portion of the barrel of the pen, said cartridge being formed .with internal threads disposed around a flange thereof to cooperate with and engage complemental threads on said bushing, and the puncturing point carried by said feed for rupturing said cartridge.

5. In a fountain pen the combination with a barrel having a lower portion formed with an opening adapted to receive an ink feed inserted in said opening, a bushing engaging said feed and cooperating with said barrel for a portion of its length, an'insertable cartridge disposed within the barrel over said bushing, said cartridge being provided with, threads adapted to Icooperate with complemental threads on a portion of the bushing whereby the cartridge is sealed 'to the barrel, and a puncturing point adapted to rupture a weakened portion of the cartridge when the cartridge is sealed.

6. In a fountain pen, the combination with a barrel having an opening passing through the lower portion thereof, an ink feed inserted within said opening, a bushing connected with the barrel and engaging said ink feed, threads arranged on said bushing, a cartridge adapted to beinserted within the barrel of the pen, said cartridge having an internal threaded portion to cooperate with the threads on the bushing for effecting a screw connection between said bushing and,

cartridge, and a puncturing point for rupturing said cartridge when said cartridge is sealed.

7 In a fountain pen, the combination with a barrel having an upper portion adapted to receive an insertable cartridge, the lower portion of said 'barrel having an opening therein, an ink feed disposed within said lopening, a bushing having threaded portions tapering from the center'thereof, surrounding said ink feed with the threads of said bushing on one side of the center co operating with threads on said barrel, an ink cartridge disposed within the barrel and having a tapered threaded flange portion adapted to cooperate with the threaded surface disposed on the other side of said bushing whereby said cartridge is sealed to the barrel, and a puncturing point carried by the pen feed for rupturing said cartridge.

8. In a fountain pen, the combination with an ink barrel having a central opening passing through the lower portion thereof,

said opening being enlarged at its upper tridge when the cartridge is screwed to the bushing.

9. In a fountain pen, the combination with a "barrel having a cartridge receiving opening and formed at its lower end with a central ink feed receiving opening, an ink feed disposed within said opening, a bushing encircling the upper part of said feed and having external threads, a portion of said bushing being threaded to the interior walls of the ink feed receiving opening, an insertable cartridge disposedin said cartridgel receiving opening of the barrel, said cartridge being provided at its lower end with permanent threads adapted to cooperiPng. a threaded bushing enclrcllng sa1d lnk.

ate with complemental threads on a portion of the bushing whereby. the cartridge. 1s sealed to the barrel, and a puncturmg polnt adapted to rupture a weakened ortion of the cartridge when the same is t readed to said bushing.

' 10. `In a fountain pen, the combination with a barrel having a cartridge receiving opening and an ink feed receivlng opening, said' ink feed receiving openinor passing through the lower portion of the barrel and having a part thereof of a diameter substantiallvless than the diameter of said cartridge receiving opening, an ink feed disosed within said ink feed receiving openfeed and threaded to thel walls'of an enlarged portion of said ink feed openlng, a cartridge disposed within the barrel in the cartridge receiving opening of said barrel, said cartridge having an internal threaded portion adapted to cooperate wlth the threads on the bushing for effecting a screw connection between the bushing and cartridge, and a puncturing point for rupturing the cartridge.

11. In a fountain pen, the combination with a barrel having a central opening in the lower portion thereof, said opening being enlarged near its upper end with the walls thereof threaded, an ink feed disposed within said opening. an externally threaded bushing fitting around said ink feed, the threads of a portion of said bushing engaging the threads on the walls of the enlarged part of the central opening, an interchangeable metallic ink cartridge disposed within the upper portion of the barrel of the pen, said cartridge being formed with permanent threads at its lower end adapted to engage conlplemental threads on a portion of said bushing. and a puncturing point for rupturing said cartridge when the same is screwed in position.

12. In a fountain pen, the combination with an ink barrel having an interior opening at its lower end, an ink feed disposed within said opening, a bushing fittingarou-nd the upper part ofsaid ink feed, and threads for uniting said bushing to the walls of the central opening in said barrel, an interchangeable ink cartridge disposed within thel upper part of the barrel, said cartridge being formed with permanent internal threads adapted to engage threads on a portiou of said bushing projecting beyond the central opening in thebarrel, and a puncturing point carried for rupturing a weakened portion of said cartridge.

13. In a fountain pen the comblnation with a barrel having a cartridge receiving opening and an ink feed vreceiving opening of a diameter less than said cartridge receiving opening. of an inlefeed disposed within said ink feeding openlng, an extending part projecting from said'barrel adjacent the ink feed receiving opening therein and into said cartridge recelving opening formed with a detachable vconnecting portion thereon and spaced from the walls of the cartridge receiving opening of the barrel, a. cartridge disposed within said carriage receiving opening and having a part adapted to cooperate with said detachable connecting portion on said extending part for effecting a sealed connection between the cartridge and said extending part and a puncturing point adapted to rupture said cartridge.

14. In a fountain pen, the combination with a barrel having a cartridge receiving opening therein, and an ink feeding opening of a diameter less than the diameter of the said cartridge receivingopening, an ink feed disposed within said ink feeding opening, an extending part rejecting from said barrel adjacent to said) ink feed receiving opening therein and into said cartridge receiving opening and having threads disposed thereon spaced from the inner Walls of the cartridge receiving opening of said barrel2 a cartridge within said cartridge receivmg opening and formed with a portion having portions adapted to cooperate with the threads on said extending part for effecting a sealed connection between said cartridge and said extending part and a puncturing point adapted to rupture said cartridge.

15. In va. fountain pen, the combination with a barrel having a lower portion formed with 'an opening, an ink feed inserted in said opening, a tubular element engaging said feed and cooperating with said barrel for a portion of its length, a replaceable cartridge disposed within the barrel over said tubular element, said cartridge being provided with threads adapted to cooperate with complemental threads on a portion of the tubular element whereby the cartridge is sealed in the barrel, and a puncturing point adapted to rupture a weakened portion of the cartridge when same is inserted, the end of said tubular element immediately adjacent the complemental threads taking the form of a beveled seat on which the complemental beveled surface of the cartridge seal is adapted to seat to provide a liquid tight seal.

16. In a fountain pen, the combination with a barrel having a lower portion formed with an opening, an ink feed insertable in said opening having a cartridge puncturing point, a tubular element engaging said feed, a replaceable cartridge disposed within the barrel and provided with threads adapted to cooperate with complementa] threads on a portion of the tubular element whereby the cartridge is sealed in the barrel, the end 'of said tubular element immediately adjacent said complemental threads taking the form of a beveled seat on which a complemental beveled surface of the cartridge seal is adapted to seat'to provide a, liquid tight 17. An ink cartridge comprising a substantially rigid metallic container filled with a writing uid and having sealed ends, one of the ends beingclosed by e. sealing cap having a puncturable areev adapted to be pierced and through which the ink flows, a depressed internally threaded pen feed engaging portion, and a connecting portion between the puncturable area and the pen feed engaging portion having a h'evelled surface.

18. An ink cartridge comprising a tubular metal container containing a, Writing Huid and having sealed ends, one of the ends being closed by'a sealing cap having a punctura-ble area adapted to be pierced to permit ow of the Writing fluid therethrough, a depressed internally threaded pen feed engaging portion, and a connecting portion therebetween having a surface tapering inwardly. from the pen feed engaging portion to the puncturable area adapted to orm a bevelled seat.

ROBERT T. POLLOCK. 

